A Congolese Medecins Sans Frontieres (MSF) health worker is seen as they prepare the introduction of...

A Congolese Medecins Sans Frontieres (MSF) health worker is seen as they prepare the introduction of the second ebola vaccine produced by Johnson & Johnson, in Majengo neighborhood of Goma, Democratic Republic of Congo, November 14, 2019. REUTERS/Fiston Mahamba

Congolese residents gather around Medecins Sans Frontieres (MSF) health workers as they prepare the introduction of the second ebola vaccine produced by Johnson & Johnson, in Majengo neighborhood of Goma, Democratic Republic of Congo, November 14, 2019. REUTERS/Fiston Mahamba

Congolese residents gather around Medecins Sans Frontieres (MSF) health workers as they prepare the introduction of the second ebola vaccine produced by Johnson & Johnson, in Majengo neighborhood of Goma, Democratic Republic of Congo, November 14, 2019. REUTERS/Fiston Mahamba

A Medecins Sans Frontieres (MSF) worker paddles a boat through floods in Pibor, Boma state, in the Greater...

A Medecins Sans Frontieres (MSF) worker paddles a boat through floods in Pibor, Boma state, in the Greater Upper Nile region of South Sudan November 1, 2019. Picture taken November 1, 2019. REUTERS/Samir Bol

RTS2THJD

October 30, 2019

An Italian doctor at the Pozzallo port, Vincenzo Morello carries a child as migrants disembark at the...

An Italian doctor at the Pozzallo port, Vincenzo Morello carries a child as migrants disembark at the...

An Italian doctor at the Pozzallo port, Vincenzo Morello carries a child as migrants disembark at the port after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THFN

October 30, 2019

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THFJ

October 30, 2019

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THF3

October 30, 2019

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THE5

October 30, 2019

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THDU

October 30, 2019

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THDR

October 30, 2019

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THDM

October 30, 2019

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THD0

October 30, 2019

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2THCX

October 30, 2019

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

Migrants disembark at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2TH9G

October 30, 2019

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans...

A migrant disembarks at the port of Pozzallo after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

RTS2TGXC

October 30, 2019

Preparations are made at the port of Pozzallo for migrants to disembark after spending nearly two weeks...

Preparations are made at the port of Pozzallo for migrants to disembark after spending nearly two weeks...

Preparations are made at the port of Pozzallo for migrants to disembark after spending nearly two weeks on board the Medecins Sans Frontieres (MSF)-operated Ocean Viking, on the island of Sicily, Italy, October 30, 2019. REUTERS/Antonio Parrinello

Ebola survivor and caregiver Vianey Kombi takes care of a three-month-old orphan girl who is confirmed...

Vianey Kombi, 31, An Ebola survivor and caregiver, takes care of a three-month-old orphan girl who is confirmed to be suffering from Ebola, inside the Biosecure Emergency Care Unit (CUBE) at Medecins Sans Frontieres (MSF) Ebola treatment center (ETC) in Beni, in the Democratic Republic of Congo, October 6, 2019. Kombi was a maths teacher when he contracted Ebola last November. He found it impossible to return to his former job and now cares for Ebola patients. "It hurts when I walk past the school where I was teaching, and the children who recognise me start screaming in my direction: Ebola, Ebola," Kombi said. "We have all been accused of receiving money to say that we had Ebola," he said. "It hurts a lot when your community treats you as corrupt after you've been at your sickest." REUTERS/Zohra Bensemra

Vianey Kombi, 31, An Ebola survivor and caregiver, takes care of a three-month-old orphan girl who is confirmed to be suffering from Ebola, inside the Biosecure Emergency Care Unit (CUBE) at Medecins Sans Frontieres (MSF) Ebola treatment center (ETC) in Beni, in the Democratic Republic of Congo, October 6, 2019. Kombi was a maths teacher when he contracted Ebola last November. He found it impossible to return to his former job and now cares for Ebola patients. "It hurts when I walk past the school where I was teaching, and the children who recognise me start screaming in my direction: Ebola, Ebola," Kombi said. "We have all been accused of receiving money to say that we had Ebola," he said. "It hurts a lot when your community treats you as corrupt after you've been at your sickest." REUTERS/Zohra Bensemra SEARCH "EBOLA ZOHRA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

RTS2RNZU

October 18, 2019

Grace, a health worker, uses a clock to time an intravenous drip for a three-month-old orphan girl who...

Grace, a health worker, uses a clock to time an intravenous drip for a three-month-old orphan girl who is confirmed to be suffering from Ebola, inside the Biosecure Emergency Care Unit (CUBE) at Medecins Sans Frontieres (MSF) Ebola treatment center (ETC) in Beni, in the Democratic Republic of Congo, October 6, 2019. REUTERS/Zohra Bensemra SEARCH "EBOLA ZOHRA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Joanne Liu, international president of Medecins Sans Frontieres (MSF - Doctors Without Borders), and Hassiba Hadj Sahraoui, Humanitarian Affairs Adviser at Medecins sans Frontieres, attend a news conference, about the restart of their migrant rescue mission off the coast of Libya with SOS Mediterranee's new ship, the Ocean Viking, in Paris, France, July 22, 2019. REUTERS/Benoit Tessier

Joanne Liu, international president of Medecins Sans Frontieres (MSF), attends a news conference in Paris...

Joanne Liu, international president of Medecins Sans Frontieres (MSF - Doctors Without Borders), attends a news conference, about the restart of their migrant rescue mission off the coast of Libya with SOS Mediterranee's new ship, the Ocean Viking, in Paris, France, July 22, 2019. REUTERS/Benoit Tessier

RTX70JWG

July 22, 2019

Francois Thomas, president of SOS Mediterranee, and Joanne Liu, international president of Medecins Sans...

Francois Thomas, president of SOS Mediterranee, and Joanne Liu, international president of Medecins Sans...

Francois Thomas, president of SOS Mediterranee, and Joanne Liu, international president of Medecins Sans Frontieres (MSF - Doctors Without Borders), and Hassiba Hadj Sahraoui, Humanitarian Affairs Adviser at Medecins sans Frontieres, attend a news conference, about the restart of their migrant rescue mission off the coast of Libya with SOS Mediterranee's new ship, the Ocean Viking, in Paris, France, July 22, 2019. REUTERS/Benoit Tessier

Sophie Beau, co-founder of the charity SOS Mediterranee, Francois Thomas, president of SOS Mediterranee, and Joanne Liu, international president of Medecins Sans Frontieres (MSF - Doctors Without Borders), attend a news conference, about the restart of their migrant rescue mission off the coast of Libya with SOS Mediterranee's new ship, the Ocean Viking, in Paris, France, July 22, 2019. REUTERS/Benoit Tessier

Sophie Beau, co-founder of the charity SOS Mediterranee, Francois Thomas, president of SOS Mediterranee, and Joanne Liu, international president of Medecins Sans Frontieres (MSF - Doctors Without Borders), attend a news conference, about the restart of their migrant rescue mission off the coast of Libya with SOS Mediterranee's new ship, the Ocean Viking, in Paris, France, July 22, 2019. REUTERS/Benoit Tessier

Joanne Liu, international president of Medecins Sans Frontieres (MSF), attends a news conference in Paris...

Joanne Liu, international president of Medecins Sans Frontieres (MSF - Doctors Without Borders), attends a news conference, about the restart of their migrant rescue mission off the coast of Libya with SOS Mediterranee's new ship, the Ocean Viking, in Paris, France, July 22, 2019. REUTERS/Benoit Tessier

RTX70JVK

July 22, 2019

Francois Thomas, president of SOS Mediterranee, and Joanne Liu, international president of Medecins Sans...

Francois Thomas, president of SOS Mediterranee, and Joanne Liu, international president of Medecins Sans...

Francois Thomas, president of SOS Mediterranee, and Joanne Liu, international president of Medecins Sans Frontieres (MSF - Doctors Without Borders), attend a news conference, about the restart of their migrant rescue mission off the coast of Libya with SOS Mediterranee's new ship, the Ocean Viking, in Paris, France, July 22, 2019. REUTERS/Benoit Tessier

Medecins Sans Frontieres (MSF) staffs inspect ebola preparedness facility at the Bwera general hospital near the border with the Democratic Republic of Congo in Bwera, Uganda, June 14, 2019. REUTERS/James Akena

RTS296NB

December 06, 2018

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical...

The logo of Medecins Sans Frontieres is seen at the international medical humanitarian organisation MSF...

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296N6

December 06, 2018

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) puts a sticker on a car at the...

An employee of Medecins Sans Frontieres puts a sticker on a car at the international medical humanitarian...

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) puts a sticker on a car at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296N3

December 06, 2018

A sticker of Medecins Sans Frontieres (MSF - Doctors Without Borders) is pictured on a box of drugs for...

A sticker of Medecins Sans Frontieres is pictured on a box of drugs for Nigeria, at the international...

A sticker of Medecins Sans Frontieres (MSF - Doctors Without Borders) is pictured on a box of drugs for Nigeria, at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296N2

December 06, 2018

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical...

The logo of Medecins Sans Frontieres is seen at the international medical humanitarian organisation MSF...

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296N1

December 06, 2018

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical...

The logo of Medecins Sans Frontieres is seen at the international medical humanitarian organisation MSF...

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296L3

December 06, 2018

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical...

The logo of Medecins Sans Frontieres is seen at the international medical humanitarian organisation MSF...

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical humanitarian organisation MSF logistique centre in Merignac, near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296KX

December 06, 2018

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen on the back of an employee...

The logo of Medecins Sans Frontieres is seen on the back of an employee at the international medical...

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen on the back of an employee at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296KR

December 06, 2018

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical...

The logo of Medecins Sans Frontieres is seen at the international medical humanitarian organisation MSF...

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296KO

December 06, 2018

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical...

The logo of Medecins Sans Frontieres is seen at the international medical humanitarian organisation MSF...

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296JK

December 06, 2018

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) puts a flag on a car at the international...

An employee of Medecins Sans Frontieres puts a flag on a car at the international medical humanitarian...

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) puts a flag on a car at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296J1

December 06, 2018

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) puts a stickers on a car at the...

An employee of Medecins Sans Frontieres puts a stickers on a car at the international medical humanitarian...

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) puts a stickers on a car at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296J0

December 06, 2018

A sticker of Medecins Sans Frontieres (MSF - Doctors Without Borders) is pictured on a box of drugs for...

A sticker of Medecins Sans Frontieres is pictured on a box of drugs for Yemen, at the international medical...

A sticker of Medecins Sans Frontieres (MSF - Doctors Without Borders) is pictured on a box of drugs for Yemen, at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296IY

December 06, 2018

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) puts a stickers on a car at the...

An employee of Medecins Sans Frontieres puts a stickers on a car at the international medical humanitarian...

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) puts a stickers on a car at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296IW

December 06, 2018

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen on the back of an employee...

The logo of Medecins Sans Frontieres is seen on the back of an employee at the international medical...

The logo of Medecins Sans Frontieres (MSF - Doctors Without Borders) is seen on the back of an employee at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296IV

December 06, 2018

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) walks in a corridor at the international...

An employee of Medecins Sans Frontieres walks in a corridor at the international medical humanitarian...

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) walks in a corridor at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTS296IU

December 06, 2018

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) walks in a corridor at the international...

An employee of Medecins Sans Frontieres walks in a corridor at the international medical humanitarian...

An employee of Medecins Sans Frontieres (MSF - Doctors Without Borders) walks in a corridor at the international medical humanitarian organisation MSF logistique centre in Merignac near Bordeaux, France, December 6, 2018. REUTERS/Regis Duvignau

RTX6BTEP

July 17, 2018

A mural is painted by hands and messages from wounded people, who had been recovered and discharged from...

A mural is painted by hands and messages from wounded people, who had been recovered and discharged from...

A mural is painted by hands and messages from wounded people, who had been recovered and discharged from the Medecins Sans Frontieres hospital in Mosul, Iraq July 10, 2018. Picture taken July 10, 2018. REUTERS/Ari jalal TPX IMAGES OF THE DAY

RTX6BT1J

July 17, 2018

Staff from Medecins Sans Frontieres are seen near the operations hall in MSF hospital in Mosul, Iraq...

A staff from MFS treats an Iraqi patient man, who was wounded by clashes, and remains under care at Medecins...

A staff from Medecins Sans Frontieres treats an Iraqi patient man, who was wounded by clashes, and remains under care at the MSF Hospital in Mosul, Iraq July 10, 2018. Picture taken July 10, 2018. REUTERS/Ari Jalal

RTX6BSXT

July 17, 2018

Members of Medecins Sans Frontieres staff are seen at MSF hospital in Mosul, Iraq July 10, 2018. Picture...

A mural is painted by hands and messages from wounded people, who had been recovered and discharged from...

A mural is painted by hands and messages from wounded people, who had been recovered and discharged from the Medecins Sans Frontieres hospital in Mosul, Iraq July 10, 2018. Picture taken July 10, 2018. REUTERS/Ari jalal

RTX6BSWY

July 17, 2018

A staff from Medecins Sans Frontieres treats Anas Bashar, an Iraqi patient boy, who was wounded by clashes,...

A staff from MFS treats Anas Bashar, an Iraqi patient boy, who was wounded by clashes, and remains under...

A staff from Medecins Sans Frontieres treats Anas Bashar, an Iraqi patient boy, who was wounded by clashes, and remains under care at the MSF Hospital in Mosul, Iraq July 10, 2018. Picture taken July 10, 2018. REUTERS/Ari Jalal

RTX6BSWE

July 17, 2018

Members of Medecins Sans Frontieres staff are seen at MSF hospital in Mosul, Iraq July 10, 2018. Picture...

A mural is painted by hands and messages from wounded people, who had been recovered and discharged from...

A mural is painted by hands and messages from wounded people, who had been recovered and discharged from the Medecins Sans Frontieres hospital in Mosul, Iraq July 10, 2018. Picture taken July 10, 2018. REUTERS/Ari jalal

RTX6BSTM

July 17, 2018

A staff from Medecins Sans Frontieres treats an Iraqi patient man, who was wounded by clashes, and remains...

A staff from MFS treats an Iraqi patient man, who was wounded by clashes, and remains under care at Medecins...

A staff from Medecins Sans Frontieres treats an Iraqi patient man, who was wounded by clashes, and remains under care at the MSF Hospital in Mosul, Iraq July 10, 2018. Picture taken July 10, 2018. REUTERS/Ari Jalal

RTX6BSS8

July 17, 2018

A staff from Medecins Sans Frontieres treats Anas Bashar, an Iraqi patient boy, who was wounded by clashes,...

A staff from MFS treats Anas Bashar, an Iraqi patient boy, who was wounded by clashes, and remains under...

A staff from Medecins Sans Frontieres treats Anas Bashar, an Iraqi patient boy, who was wounded by clashes, and remains under care at the MSF Hospital in Mosul, Iraq July 10, 2018. Picture taken July 10, 2018. REUTERS/Ari Jalal

RTX6BSRJ

July 17, 2018

Anas Bashar, a boy who was wounded by clashes, remains under care at Medecins Sans Frontieres hospital...